Youtube and streaming services (e.g., Spotify Premium) are good for exploring music, however IME modern high-quality high-resolution recordings of classical music deliver the best sound quality (e.g., SACD, Blu-ray, Pure Audio Blu-ray, Ultra HD Blu-ray, plus downloaded hi-res (24bit/192kHz) FLAC, and DSD).      In a large room where the main speakers must be far apart, multi-channel can be beneficial.     Subwoofers can be a PITA, but when "dialed in" can help deliver the pow